Olivier Theyskens has mastered the art of getting journalists in a tizz - by announcing that he knows who is designing Kate Middleton's wedding dress and coming dangerously close to spilling the beans!

Speaking to Stylelite at the Tribeca Film Festival Theyskens answered a question about who he wanted to design the gown saying: "I... nobody knows?" Before going on to admit: "Oh my God, I know who does it."

Despite the near miss the designer refused to elaborate further: "I will never say! I was thinking everybody knew. I was going to say, like, 'I can't wait to see the dress _______ is making!'"

Theyskens then responded to questions over the apparent revelation earlier this month that Sophie Cranston would be taking care of the dress design, grinning and asking "Who?"